Does anybody know if anyone makes either bearing spacers or just oversize bearings to allow the use of big block chevy rods in a small block chevy engine?
Or possibly small block rods with big block rod pin bores? I have a set of small
block pistons with the big block size pin bores. they are Bill Miller pistons used in
nitrous applications. I am lost as to finding a rod that will work with these pistons. bought them on ebay along with the crank but the seller kept the rods
he had been using with this combo. I need a cheap way to go about this, can't
afford to go to aluminum rods. any ideas are very welcome. Thank you very much.

Problem with going to BBC rod is two-fold. One is the journal size as you know and even if they did make a spacer you would have clearance problems with the overall size of the large end and the camshaft. Also the center distance from pin to journal is way too long unless the piston is made for the 6.135 length.

This doesn't leave a whole lot of options. You could re-size the rods to accept a .990 pin and make it a press fit as opposed to floating pin but depending on how much material is left on the small end you could end up weakening them.

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